ZapM is a science fiction roguelike game by Cyrus Dolph. It's his humble attempt to create "the sci-fi Nethack". It is very much a work in progress.

Many features in the game just changed name to fit science fiction setting (potions -> canisters, wands -> ray guns) but several mechanisms are innovative. Monsters present in ZapM are very varied: from grid bugs, robots and droids through klingons, aliens to Unix daemons.
Available classes are: Psion, Quarterback, Software Engineer and Space Marine.

Unique features

Floppy disks work similarly to scrolls but can be used several times until license expires or hacked to use indefinitely. One needs a computer to execute program stored on a floppy disks. Beware, buggy computers may eat disks! Give it back you rusty pile of junk!

ZapM implements implants which can be installed in brain lobes to enchance body functions.

Spells work as unusual abilities of body (and rely on charisma stat) rather as learned knowledge. To gain a spell one has to drink filthy mutagenic liquid from a vat and hope.